Hook



L. COT

HOOK

June 11, 1929.

Filed Dec. 22, 1927 f INVENTOR.

' 9 BY I A TTORNEY Patented June 11, 1929.

LOUIS cor, or HOBOKEN, NEW JERSEY,

HOOK.

Application filed December 22, 1927. Serial No. 241,770.

This invention relates to hooks for hoisting devices in general and particularly to the kind described in my Patent #1,521,230 issued to me December 30, 1924.

The prime object of my invention is to provide a sin'iplilied form of a safety hook which will automaticallyclose when in its normal suspended position and which will open automaticall y when swung out in either direction from its normal suspended position.

Another object of my invention is to provide a device of this character enabling the hauling or lifting of cargo from the hold of a ship, or thereinto without causing any damage to the ships structure, which is usually caused by hooks catching at the edges of the hold opening.

A. further object of my invention is to provide a cargo hook comprising a load carrying member and a closing member, so connected with the former, as to allow it vto both swing and slide relative to the load carrying memher.

A further object of my invention is to provide guide and locking means with both of these members for restricting the movement of the locking member relative to the load carrying member to a lateral motion and to lock the members when in closed position against a sidewise movement.

The foregoing and further objects will be more fully apparent from the following description and the accompanying drawing, forming part of this disclosure, but by no means intended to limit the same to the actual showing.

Referring to the drawings, Figure 1 illustrates my device in its normally suspended closed position,

Figure 2 illustrates the same device, partially in section, and indicating the position of the closing member in open position by broken lines,

Figure 3 illustrates a modified form of my device in its normally suspended position and provided with an additional weight for the purpose to be explained later.

In the figures, numeral denotes the suspending link of a derrick or hoist chain which passes through an aperture 11, provided in the upper enlarged portion 12, of hook-shape load carrying member 13. The free end of member 13 is provided with a reduced extension 14, and its enlarged end 12 is provided with a slot 15 at the left hand upper corner. At the right hand side of opening 11, there is provided a recess 16 in the load carrving member which opens at the top at 17, and is provided with a scavenging opening 18 at the bottom.

Through the recess 16, and passed through the side walls of member 13, is shown a pin 19, adapted to engage the elongated looped end 20 of the closing member 21. The latter constitutes an inverted hook, the free end of which is provided with a slot, indicated in Figure 1 at 22. This slot serves for engaging the reduced portion 14 of the carrying meniber when the closing member is in its closed position.

At the inner portion of the closing member there are provided ribs 22 and 23, serving as guide means for the closing member, relative to said loading member while the closing member is being opened or closed or kept in open position. These ribs engage the slots 15 of the load carrying member and restrict the movement of the closing member to a lateral motion and also keep the two members against a sidewise movement relative to each other.

The scavenging opening 18 of the load carrying member serves for the purpose of preventing an accumulation of foreign articles in the recess 16, thereby precluding an encumbrance to the operation of the closing member. l/Vhen the load carrying member is 1n its normal suspended position, the closing member assumes the normal closed position shown in Figure 1. This normal suspended position is assumed by the loading member when either carrying a load, lifting, or lowermg same,-or when moving empty in vertical direction.

The moment however, the hook reaches a position when the load weight ceases to exert a pull upon the load carrying member, thus causing the load carrying member to tilt in either right hand or left hand direction, the closing member automatically becomes disengaged from the load carrying member as indicated in broken lines in Figure 2. This automatic disengagement is due to the gravity action caused by bringing the load carrying member out of its normally suspended upright position. \Vhen the load carrying member reaches a position of say 90, from that shown in Figure 2, in either direction, the loop 20 permits a further movement of the closing member in outward direction, thus widening the free passage between the load carrying member and the closing member.

It is obvious that the closing member may be operated manually by lifting same from its closed position into open position while the load carrying member is in its normal vertical suspended position. But in order that the movement of the closing member becomes automatic, the load carrying member has to be swung out from its normally sus pended vertical position to a considerable de gree. V

Referring to Figure 3, there is shown a modified form of my device in which again a suspending link 10 is shown engaging the opening 11, provided inthe upper portion 12 of load carrying member 13. There is again provided a. closed member 21 which is held in a combination hinged and sliding connection with the loading member by means of pin 19. The load carrying member is provided in this case with an additional weight or hump 2a which may be placed in any desired position relative to the body of the loading member, as shown for instance at 24 in broken lines. Such additional weight provision serves for the purpose of assuring the load carrying member to always, and particularly while not carrying a load, remain in its normally suspended verticalposition.

A very important feature of this invention resides in the fact that the rounded portion 25 oi the closing member precludes damage to the opening in the hold of a ship and also permits smoothand unimpaired elevation of the cargo hook and prevents it from catching any obstruction. The entire hook for that matter is constructed smoothly at its upper surface so that it may pass through even restricted passages without difliculty.

While I have shown and described a specifie form of my invention, be it understood that changes and improvements may be made within the scope of my invention, for which I claim:

1. A cargo hook, comprising a suspended load carrying member and a closing member associated therewith. said first mentioned member having the shape of a hook open at one side and provided with a hollow recess, a pin passing through the side walls and the space formed by said recess, said closing me1n ber resembling an inverted hook terminating at its attaching end in an oblong loop adapted to be engaged by said pin, said oblong loop permitting said closing member to both swingabout and sllde upon said pin, guide vmeans provided with both members and adapted to limit the movement of said closing member to a lateral swinging and sliding motion when said member is caused to move from closing to its opening position and to keep both members locked against side movement, when said "closing member is in its closing position, said closing member adapted to operate within said link.

2. A cargo hook as per claim 1, means provided at the load carrying member for scavenging said recess provided therein of foreign matter.

3. A hook for hoisting devices adapted for attachment to a chain link, comprising a load carrying member suspended by said link, a closing men'iber for and connected with said carrying member and adapted to operate within but without engaging said link.

4. A hook for hoisting devices adapted for attachment toa chain link, comprising a load carrying member suspended by said link, a closing member laterally guided inrelation to and swingingly connected with said carrying member and adapted to operate within but without engaging said link.

5. A hook for hoisting devices adapted for attachment to a chain link, comprising a load carrying member, a closing member associated with the latter and adapted to remain in closing position when said carrying member is in its normally suspended load carrying position and automatically open when said carrying member is swung out of its carrying position, said closing member adapted to operate within but without engaging said link, and means provided with both members to limit their respective movements to a lateral motion.

6. A hook for hoisting devices adapted for attachment to a chain link, comprising a load carrying member suspended by said link and provided with a hollow, elongated recess, a pin pressing therethrough, a closing member associated with said carrying member and adapted to operate within but without engaging said link, said closing member having at one of its ends a slotted BXtGIiSlOIi ZLClZLPtGCl to operate within said recess and engaging said pin and guide means provided with both members for limiting their respective movements to a lateral motion and for locking said closing member with said carrying member, when in closing position.

Signed at New York, in the county of New York and State o'i New York, this 26th day of November, A. D. 1927.

LOUIS con 

